Convert UK gallons per minute to Cubic inches per hour
Convert UK gallons per minute (gpm) to Cubic inches per hour (in³/h) instantly and accurately.
Conversion Formula
in³/h = gpm × 16645.16597
About UK gallons per minute
The UK (imperial) gallon per minute (gpm) equals 4.54609×10⁻³/60 ≈ 7.577×10⁻⁵ m³/s, historically used in British plumbing design, pump curves, and water-treatment plant sizing. Pre-metric UK water-industry capacity tables and pump manufacturers quoted flows in UK gal/min; legacy British Standard BS EN pump curves often show both units. 1 UK gpm ≈ 7.577×10⁻⁵ m³/s ≈ 4.546 L/min.
About Cubic inches per hour
The cubic inch per hour (in³/h) equals 1.6387064×10⁻⁵/3600 ≈ 4.552×10⁻⁹ m³/s, appearing in US oilfield plunger-pump capacity datasheets and slow hydraulic-actuator specifications. It is also used in US ASTM leak-test standards where maximum allowable leakage past a valve seal is expressed in in³/h at rated pressure. 1 in³/h ≈ 4.552×10⁻⁹ m³/s.
Quick Reference Table
| UK gallons per minute (gpm) | Cubic inches per hour (in³/h) |
|---|---|
| 1 gpm | 16645.2 in³/h |
| 2 gpm | 33290.3 in³/h |
| 5 gpm | 83225.8 in³/h |
| 10 gpm | 166452 in³/h |
| 25 gpm | 416129 in³/h |
| 50 gpm | 832258 in³/h |
| 100 gpm | 1664520 in³/h |